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1
Yeates, Laura Carleen. "Physiological capabilities and behavioral strategies for marine living by the smallest marine mammal, the sea otter (Enhydra lutris) /". Diss., Digital Dissertations Database. Restricted to UC campuses, 2006. http://uclibs.org/PID/11984.
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2
Perera, Menerapitiya Vidanalage Sammani Kaushalya. "Surging Sea and Other Stories". Miami University / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=miami1470353751.
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3
Kreuder, Johnson Christine. "Evaluation of survey methods used to assess distribution and abundance and characterization of patterns of mortality in southern sea otters /". Restricted to UC campuses, 2003. http://bibpurl.oclc.org/web/22018.
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4
Lidbetter, Thomas. "Hide-and-seek and other search games". Thesis, London School of Economics and Political Science (University of London), 2013. http://etheses.lse.ac.uk/692/.
Testo completoAbstract (sommario):
In the game of hide-and-seek played between two players, a Hider picks a hiding place and a Searcher tries to find him in the least possible time. Since Isaacs had the idea of formulating this mathematically as a zero-sum game almost fifty years ago in his book, Differential Games, the theory of search games has been studied and developed extensively. In the classic model of search games on networks, first formalised by Gal in 1979, a Hider strategy is a point on the network and a Searcher strategy is a constant speed path starting from a designated point of the network. The Searcher wishes to minimise the time to find the Hider (the payoff), and the Hider wishes to maximise it. Gal solved this game for certain classes of networks: that is, he found optimal strategies and the payoff assuming best play on both sides. Here we study new formulations of search games, starting with a model proposed by Alpern where the speed of the Searcher depends on which direction he is traveling. We give a solution of this game on a class of networks called trees, generalising Gal's work. We also show how the game relates to another new model of search studied by Baston and Kikuta, where the Searcher must pay extra search costs to search the network's nodes (or vertices). We go on to study another new model of search called expanding search, which models coal mining. We solve this game on trees and also study the related problem where the Hider's strategy is known to the Searcher. We extend the expanding search game to consider what happens if there are several hidden objects and solve this game for certain classes of networks. Finally we study a game in which a squirrel hides nuts from a pilferer.
5
Lindsey, Jacqueline Kimberly. "Estuarine habitat use by the California sea otter (Enhydra lutris nereis)". Thesis, San Jose State University, 2017. http://pqdtopen.proquest.com/#viewpdf?dispub=10255129.
Testo completoAbstract (sommario):
As the southern sea otter (Enhydra lutris nereis) range expands into northern and southern California, it will encounter estuaries that have been historically occupied by sea otters. Understanding how otters use re-colonized estuarine environments will inform how estuaries might be managed to encourage future sea otter range expansion. This project addressed the question: how do southern sea otters use space in the unique estuarine habitats of Elkhorn Slough? I compared the locations and behaviors of 25 individual sea otters of different status (male, female, and female with pup) among eelgrass, saltmud, saltmarsh, tidal creek, and main channel habitats in Elkhorn Slough. From these data I created a synoptic model to predict space use for resident otters of Elkhorn Slough based on sex, behavior, home range, and habitat distribution. Ninety percent home ranges calculated from the model indicated that females used larger home ranges than males in the slough, but both sexes had smaller home range areas than otters using the rocky outer-coast habitats of the Monterey Peninsula. In Elkhorn Slough, important habitats associated with resting included tidal creeks (for females only) and eelgrass, whereas the main channel was important for foraging behaviors of both sexes. Although using land habitats, sea otters were most likely to be found within 50 m of water. Protection of similar resting and foraging habitats in prey-rich estuaries colonized in the future will promote southern sea otters recovery by allowing them to re-colonize historically important estuarine habitats.
6
Matos, Bárbara Cartagena da Silva. "Do sea otters according to prey's nutritional value?" Master's thesis, Universidade de Aveiro, 2016. http://hdl.handle.net/10773/17176.
Testo completoAbstract (sommario):
Mestrado em Ecologia AplicadaA Teoria do Forrageio Ótimo propõe que o estímulo nutricional na escolha de presas e busca de alimento em carnívoros é o ganho energético. Em contraste, pesquisas recentes sugerem que os carnívoros selecionam presas que fornecem uma dieta com um equilíbrio específico de macronutrientes (gordura, proteína, hidratos de carbono), ao invés do maior conteúdo energético. Para este efeito, as escolhas de presas de lontras-marinhas (Enhydra lutris) que habitam Sitka Sound no sudeste do Alasca, foram estudadas durante os meses de maio a agosto de 2016. Os objetivos desta pesquisa foram: 1) descrever a dieta das lontras-marinhas em Sitka Sound; 2) descrever o valor nutricional das suas presas; 3) comparar diferenças na escolha de presas de acordo com o sexo; e 4) avaliar e comparar o valor nutricional das presas com as escolhas das lontras-marinhas. Os dados de observação foram coletados oportunisticamente, através de uma plataforma de oportunidade. As presas de lontras-marinhas foram capturadas em áreas arbitrárias de Sitka Sound, e analisadas quanto à sua percentagem em lípidos (teor de gordura) e calorias (densidade de energia). O consumo de presas foi significativamente diferente: as amêijoas foram as presas mais consumidas (68,6%), seguidos pelos ouriços-do-mar (14,3%), vieiras (5,7%), pepinos-do-mar (5,7%), caranguejos (2,9%) e estrelas-do-mar (2,9%). Além disso, os resultados revelaram uma significativa diversidade no conteúdo de gordura e densidade energética entre presas de lontra-marinha. O abalone registou maior teor de densidade energética, seguido pelas vieiras, enquanto que os ouriços-do-mar registaram maior teor em lípidos. A escolha de presas e a ingestão de nutrientes não diferiram significativamente entre machos e fêmeas, no entanto, os machos de lontras-marinhas consumiram mais moluscos do que as fêmeas, enquanto que as fêmeas consumiram mais ouriços-do-mar do que os machos. O trabalho sobre nutrição em carnívoros é preliminar, e estes resultados fornecem um ponto de partida para futuras pesquisas. As respostas a estas questões não só terão implicações significativas na gestão das populações de predadores e das comunidades ecológicas de que fazem parte, mas também acrescentarão informações importantes sobre a biologia de predadores que até agora foram negligenciadas. Além disso, os conflitos nas comunidades sobre os impactos que as lontras-marinhas têm na pesca comercial no sudeste do Alasca, não podem ser ignorados. Compreender as escolhas de presas de lontras-marinhas pode fornecer previsões de como a pesca pode ser afetada, de acordo com o crescimento da população de lontras nesta área, a fim de ajudar políticos, membros da comunidade e pescadores comerciais, a responder em conformidade.
Foraging theory proposes that the nutritional driver of prey choice and foraging in carnivores is energy gain. In contrast, recent research suggests that carnivores select prey that provides a diet with a specific balance of macronutrients (fat, protein, carbohydrates), rather than the highest energy content. To this effect, the prey choices of sea otters (Enhydra lutris) inhabiting Sitka Sound, in southeast Alaska, were studied during the months of May-August of 2016. The goals of this research were to 1) describe sea otter’s diet in Sitka Sound; 2) describe the nutritional value of sea otters’ prey items; 3) compare differences in prey choice according to sex; and 4) evaluate and compare prey’s nutritional value with sea otter’s prey choices. Foraging observational data were collected opportunistically on a boat-based platform of opportunity. Sea otter’s main prey were captured in arbitrary areas of Sitka Sound, and analyzed for percentage in lipids (fat content), and calories (energy density). Prey consumption was significantly different: clams were the most frequently consumed prey (68,6%), followed by sea urchins (14,3%), scallops (5,7%), sea cucumbers (5,7%), crabs (2,9%) and sea stars (2,9%). Also, the results revealed a significant diversity in content of fat and energy density between sea otter prey specimens. Abalone ranked first on content of energy density, followed by scallops, while sea urchins recorded the highest lipid content. Prey choice and nutrient intake were not significant different between male and female sea otters, nevertheless, males consumed more clams than females, while females consumed more sea urchins than males. The work on carnivore nutrition is preliminary, and these results provide a starting point for future work. Answers to such questions not only will have significant implications for managing predator populations and the ecological communities of which they are a part, but will also add important information on predator biology that has been neglected so far. Moreover, communities’ conflicts over the impacts sea otters are having on commercial shellfisheries in southeast Alaska cannot be overlooked. Understanding sea otter’s prey choices may provide information and predictions of how fisheries may be affected as the sea otter population grows in this area, in order to help decision makers, policy makers, community members, and commercial fishermen respond accordingly.
7
Wong, Yin-mei Sheron. "MARPOL wastes in Hong Kong and other countries /". Hong Kong : University of Hong Kong, 1999. http://sunzi.lib.hku.hk/hkuto/record.jsp?B21301505.
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8
Neale, Jenifer E. "To See and Be Seen: Exploring Layers of Instructional Leadership and Supervision in the Enactment of a District-wide Teacher Evaluation Reform". Scholar Commons, 2011. http://scholarcommons.usf.edu/etd/3261.
Testo completoAbstract (sommario):
This dissertation analyzes instructional leadership and evaluation protocols from a large, diverse district in the Southeastern United States in order to investigate layers of accountability and tensions created when principals are asked to fill the dual roles of both instructional leader and supervisor in a newly implemented teacher evaluation system reform. For this dissertation I investigate the role of the principal as a colleague and mentor and compare this with the role of the principal as supervisor and evaluator in hierarchical systems. I include the role of the peer evaluator, a new position, in my analysis. Critical discourse analysis is utilized, primarily informed by Fairclough's Three Dimensional Framework for investigating discourses of instructional leadership and attendant Foucauldian notions of governability. The analysis shows that district administrators, principals, peer evaluators, and teachers employ nuanced definitions of instructional leadership. These definitions are impacted by deeply entrenched norms of what it means to be a principal and a teacher within the hierarchy of the school district of interest. Principals in this study were able to navigate the dual roles of instructional leadership and supervision largely due to how they and teachers defined the role of instructional leadership. The teacher evaluation reform has brought with it a new perspective on the hierarchy coinciding with new power dynamics. The results of this study have implications for our understanding of the role of the principal and how that role is constructed by principals and teachers as well as district administrators and peer evaluators.
9
Miller, Melissa Ann. "Characterization and epidemiologic investigation of apicomplexan parasites associated with meningoencephalitis in southern sea otters (Enhydra lutris nereis) and Pacific harbor seals (Phoca vitulina richardsi) /". Available via Proquest Digital Dissertations. Restricted to UC campuses, 2002. http://bibpurl.oclc.org/web/21243.
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10
Larson, Shawn Elizabeth. "Genetic and endocrine related variability of sea otters, Enhydra lutris /". Thesis, Connect to this title online; UW restricted, 2003. http://hdl.handle.net/1773/5360.
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11
Wong, Yin-mei Sheron, e 黃燕媚. "MARPOL wastes in Hong Kong and other countries". Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1999. http://hub.hku.hk/bib/B31254421.
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12
Barfield, Johannes J. "MY EYES DUE SEE". VCU Scholars Compass, 2018. https://scholarscompass.vcu.edu/etd/5376.
Testo completoAbstract (sommario):
My Eyes Due See is a multidimensional examination of the “black experience” in America. The installation is composed of a single-channel video, a music composition that utilizes music samples and live instrumentation, and sculptures made up of car parts and broomsedge grass. Each of these elements arranged in space share a nuanced and complicated view of blackness through the lens of a black man decoding personal history and American history simultaneously. Autonomy is the overarching theme throughout the work as it pertains to race, identity, urban and rural environments, and the relationship between generational trauma and nostalgia.
13
Abdul, Malek Md. "Toxicity of Annona squamosa L. seed on Tribolium castaneum (Herbst) and other pest insects". Thesis, University of Newcastle Upon Tyne, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.308882.
Testo completo
14
Jenkins, Maggie F. "Indirect Food Web Interactions: Sea Otter Predation Linked to Invasion Success in a Marine Fouling Community". DigitalCommons@CalPoly, 2018. https://digitalcommons.calpoly.edu/theses/2000.
Testo completoAbstract (sommario):
Humans have caused grave ecological and economic damage worldwide through the introduction of invasive species. Understanding the factors that influence community susceptibility to invasion are important for controlling further spread of invasive species. Predators have been found to provide biotic resistance to invasion in both terrestrial and marine systems. However, predators can also have the opposite effect, and facilitate invasion. Therefore, recovery or expansion of native predators could facilitate the spread of invasive species. Needles et al. (2015) demonstrated that the threatened southern sea otter (Enhydra lutris nereis) facilitated the invasion of an exotic bryozoan, Watersipora subatra. However, the underlying mechanism was not fully understood. We tested the hypothesis that sea otter predation on Romaleon antennarium crabs indirectly facilitated the abundance of W. subatra. To do this, we collected weekly data on sea otter foraging and quantified the abundance of crabs in the sea otter diet. We also conducted a caging experiment, where we experimentally manipulated crab densities and limited otter access using exclusion cages on pier pilings in Morro Bay, CA. We used photoQuad image processing software to calculate the abundance of W. subatra on PVC panels within each treatment group. We found that crabs were the second most abundant prey item in Morro Bay, comprising 25.1% of the otter diet. Through the caging experiment, we found that W. subatra abundance significantly increased as crab densities decreased. Our results indicated that sea otters indirectly facilitated the invasion of W. subatra by reducing R. antennarium crab densities and sizes. Removal of crabs may release W. subatra from the disturbance caused by crab foraging behavior. Understanding the impacts of top predators in invaded ecosystems has important management implications, as recovery of predator populations could unintentionally benefit some non-native species. Therefore, management should focus first on prevention and second on early detection and eradication of invasive species likely to benefit from predator recovery.
15
Giogis, Mahteme Haile. "Seed hydration treatments in lettuce (Lactuca sativa L.) and other species in relation to longevity and seed quality". Thesis, University of Reading, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.357128.
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16
Ruark, Sarah Johnson. "Evaluation of Biological and Other Novel Seed Treatments for Organic Peanut Production". NCSU, 2008. http://www.lib.ncsu.edu/theses/available/etd-10312008-133746/.
Testo completoAbstract (sommario):
Poor stands are a constraint on organic peanut production because stand losses of 50% or more are possible with untreated seed. Biological, other novel seed treatments, and soil amendments were tested for efficacy against pre- and post-emergence damping-off in greenhouse, microplot, and field plot trials. Seed of the lines Perry, GP-NC 343, and N03081T were utilized in all trials. Nine treatments were tested in natural soil in the greenhouse. Treatments included Bacillus subtilis (Kodiak), B. pumilus (Yield Shield), Trichoderma harzianum (T-22 PB and Plantshield HC), Muscodor albus, Coniothyrium minitans (Contans), activated charcoal, two separate soil amendments of dried herbage of Monarda didyma cultivars, a commercial fungicide check (Vitavax PC), and an untreated control. Vitavax PC and Kodiak were the only seed treatments with higher percentage emergence and survival than untreated seed. A separate greenhouse experiment was conducted for seed treatments using natural soil or soil infested with field isolates of Aspergillus niger. Seed were treated with Kodiak, copper hydroxide (Champion), Plantshield HC, Kodiak and Plantshield HC combined, Streptomyces griseoviridis (Mycostop), hot water, Vitavax PC, or were left untreated. Seedling emergence and survival was much lower in inoculated versus uninoculated plots. In all plots, treatment with Kodiak increased percentage emergence and survival compared to untreated seed, but was not as effective as Vitavax PC. In uninfested plots, treatment with Champion also increased emergence and survival compared to the untreated check. Field microplot studies in Clayton, NC evaluated seed treated with Kodiak, T. harzianum, activated charcoal, Vitavax PC, or untreated seed on the three peanut lines following wheat, oat, or triticale cover crops, soil amendment with M. albus, or no cover as a control. In both years, the percentage emergence and survival was highest for Perry seeds treated with Vitavax PC. Cover crops did not affect emergence, but M. albus treatment suppressed emergence. In field studies at Lewiston, NC, the three peanut lines were treated with M. albus, Kodiak, T. harzianum, or were untreated. In the 2007 trial, none of the treatments improved stands compared to the untreated check. In 2008, the highest stand counts were produced by seed treated with Kodiak. In both years, the largest stands were N03081T. The most commonly observed pathogen was A. niger. Confounding effects of seed line and seed source prevent assessment of performance from individual cultivars. However, regardless of seed line, in most trials Kodiak seed treatment consistently increased emergence and survival over untreated seed.
17
Van, de Noort Robert. "North Sea archaeologies". Thesis, University of Exeter, 2011. http://hdl.handle.net/10036/3312.
Testo completoAbstract (sommario):
North Sea Archaeologies traces the way people engaged with the North Sea from the end of the last ice age, around 10,000 BC, to the close of the Middle Ages, about AD 1500, drawing upon archaeological research from many countries, including the UK, Netherlands, Germany, Denmark, Sweden, Norway, Belgium, and France. It addresses topics which include the first interactions of people with the emerging North Sea, the origin and development of fishing, the creation of coastal landscapes, the importance of islands and archipelagos, the development of seafaring ships and their use by early seafarers and pirates, and the treatment of boats and ships at the end of their useful lives. The study offers a ‘maritime turn’ in Archaeology through the investigation of aspects of human behaviour that have been, to various extents, disregarded, overlooked, or ignored in archaeological studies of the land. The study concludes that the relationship between humans and the sea challenges the frequently invoked dichotomy between pre-modernity and modernity, since many ancient beliefs, superstitions, and practices linked to seafaring and engagement with the sea are still widespread in the modern era.
18
Stewart, Annabelle Greer. "Dibblers on the Jurien islands : the influence of burrowing seabirds and the potential for competition from other species /". Connect to this title, 2006. http://theses.library.uwa.edu.au/adt-WU2007.0066.
Testo completo
19
Gregr, Edward James. "Sea otters, kelp forests, and ecosystem services : modelling habitats, uncertainties, and trade-offs". Thesis, University of British Columbia, 2016. http://hdl.handle.net/2429/58818.
Testo completoAbstract (sommario):
Resource management is increasingly about the equitable distribution of benefits amongst a diversity of beneficiaries while ensuring the persistence of desirable social and ecological systems. Largely because of the complexity of social-ecological systems, models intended to support integrated resource management continue to suffer from poor treatment of uncertainty, and the challenges of defining appropriate model scope and benefit representation. I explored these challenges through the process of combining field data with population, habitat, and service models to build an integrated model of coastal ecosystem services on the West coast of Vancouver Island, British Columbia, Canada. I examined the tradeoffs between sea otter and invertebrate dominated systems under 3 spatial sea otter management plans. The model predicts that an otter-dominated system will produce, in aggregate, between 30 and 90 M$ / year more than one dominated by invertebrates. Disaggregation by benefits and by location provides insight into trade-offs and equity. For example, the value of increased finfish production from enhanced primary productivity is predicted to be almost double the losses incurred by the invertebrate fishery; while increased detail on the distribution of benefits supports the definition of novel, more equitable and legitimate indicators, allowing management alternatives to be more salient. Development of the model led to advances in the applied and theoretical aspects of integrated model development. Chapter 2 confirms that uncertainties and design assumptions are mostly ignored in the popular modelling literature, and includes a conceptual model to support more consistent model design decisions. In Chapter 3 I characterised key aspects of kelp ecology in Pacific Canadian waters, and showed how the trade-off between precision and accuracy depends on whether one is pursuing knowledge or application. Chapters 4 and 5 tell the story of the integrated model, respectively focusing on ecosystem service production, and the distribution of benefits. My results show how spatial resolution is key to identifying indicators of social and ecological value. All told, my dissertation offers applied, theoretical, and methodological advances in the use of ecosystem models for integrated management. Extending the model to include stakeholder objectives would complete the data-to-decision model, allowing formal decision analysis.Science, Faculty of
Resources, Environment and Sustainability (IRES), Institute for
Graduate
20
Robert, Laurian S. "The expression of seed storage proteins in oat, other cereals and in legumes". Thesis, University of Ottawa (Canada), 1985. http://hdl.handle.net/10393/4615.
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21
Singh, Gerald Gurinder. "Effects of sea otters on nearshore ecosystem functions with implications for ecosystem services". Thesis, University of British Columbia, 2010. http://hdl.handle.net/2429/30488.
Testo completoAbstract (sommario):
Sea otters are nearshore predators whose impacts have potential implications for the provision of ecosystem services on the west coast of Vancouver Island. Sea otter predation on herbivorous sea urchins can allow kelp beds to flourish. Increased kelp production can act as a food subsidy to mussels which can promote faster growth. Otters also depredate mussels, which can affect the habitat provision function of mussels and limit them to sizes that are vulnerable to other predators. In this thesis I describe two empirical studies that explore these possible effects of otters on ecosystem processes that have implications for ecosystem services. First I investigate the impact of greater kelp productivity on carbon flow and productivity by using stable isotope analysis on kelp, water samples, and mussels in regions where otters are absent and present. I observed that mussels do not consistently assimilate higher proportions of kelp-derived carbon and do not grow faster where otters are present and kelp more abundant. This finding may be explained partly because kelp does not seem to be limiting for mussel diets where otters are absent – high observed phytoplankton biomass may dilute the kelp-derived carbon assimilated in mussel tissue. The second study explores the impact of otters as predators of mussels by sampling mussel bed characteristics in regions along a gradient of time since otters established. Mussel bed characteristics vary predictably between regions: e.g., depth and biomass are lower in regions of comparably higher otter influence. Aggregate community biomass is also lower where otters are present, and differences in dominant species may drive differences in community structure between regions. By restricting mussels to smaller sizes, otters may also subject a greater proportion of mussel growth to predation by seastars, potentially facilitating a greater proportion of energy flow through marine food webs. Otter may increase secondary productivity only where primary productivity is limiting, and they seem to constrain the habitat provisioning services of mussels. This study’s quantitative characterization of otter impacts on an ecosystem engineer (mussels), and the intertidal habitat they provide, complements existing studies of otter impacts on subtidal ecosystem processes that affect ecosystem services.
22
Morrison, Isobel. "Desert To Sea: White Fantasies, Red Rivers, and The Salton Sea". Scholarship @ Claremont, 2017. http://scholarship.claremont.edu/scripps_theses/1070.
Testo completoAbstract (sommario):
In the middle of the California Desert is an inland desert sea, called the Salton Sea. Its existence is curious, nearly magical. It is California’s largest lake, it is saltier than the Pacific Ocean, it is slowly dying, and its existence is a complete accident. This thesis breaks down the historical narrative of the Salton Sea from a white settler perspective, using theories posed by Yi Fu Tuan about distinctions between space and place. The temporality of spatial locations, the construction of the binaries natural/built, and the moralizing of landscapes all provide further understanding of the Salton Sea’s existence. Throughout history, the white settlers of the Imperial Desert have projected, their morals and desires upon the desert landscape, reforming the space into their vision of the future as a result of their abilities to tame and control rivers. Instead of a future, they produced a place replete with the past: a place considered worthless and potentially dangerous. Through looking at the constructions of space, place, memory, and history, we are better able to understand the birth of this desert sea.
23
Friström, Paula. "Re-reading the Weak Other : an Interpretation of the Husband in Wide Sargasso Sea". Thesis, Linnéuniversitetet, Institutionen för språk och litteratur, SOL, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-6521.
Testo completoAbstract (sommario):
The essay is about the unnamed husband in Jean Rhys's Wide Sargasso Sea. About how he is depicted as the European "Other" and made into a feminized and zombified weak character from a Caribbean/feminist perspective...
24
Merico, Agostino. "Modelling the seasonal succession of Emiliania huxleyi and other phytoplankton in the Bering Sea". Thesis, University of Southampton, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.398823.
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Gilkinson, Andrea Karin. "Habitat associations and photo-identification of sea otters in Simpson Bay, Prince William Sound, Alaska". Texas A&M University, 2004. http://hdl.handle.net/1969.1/3176.
Testo completoAbstract (sommario):
Habitat associations of sea otters during resting and feeding were investigated in Simpson Bay, Prince William Sound, Alaska during the summer months of 2001-2003. Sea otter locations collected during boat surveys were overlaid on bathymetry and sediment maps and water depth, sediment type, distance from shore, and position in the bay (peripheral vs. central) was determined for each. Logistic regression analysis was used to determine whether sea otter habitat use was non-random according to any of these habitat variables. Water depth was the most significant habitat association for feeding behavior, with the majority of feeding dives occurring in shallow water less than 20m deep. Position in the bay was the most significant habitat association for resting behavior, with more otters resting in the center of the bay.
In addition, digital images taken of the sea otters during the boat surveys of 2002 and 2003 were used to examine the potential of using nose scars to photo-identify individual sea otters. Both male and female sea otters bore nose scars. Forty-five percent of all individuals encountered were considered identifiable from nose scars and a total of 114 individuals were identified. This compares favorably with the results of
photo-identification studies of other marine mammals, suggesting that photo-identification may be a useful tool for the individual identification of sea otters as well.
26
Fukuyama, Allan Kiyoshi. "The ecology of bivalve communities in Prince William Sound, Alaska : influence of the Exxon Valdez oil spill and predation by sea otters /". Thesis, Connect to this title online; UW restricted, 2000. http://hdl.handle.net/1773/5302.
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Tisell, Camilla. "An investigation of the surface fluxes and other parameters inthe regional climate model RCA1 during ice conditions". Thesis, Uppsala universitet, Luft-, vatten och landskapslära, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-303758.
Testo completoAbstract (sommario):
In this study data from the regional climate model RCA1 is compared to measured data to investigate how good the model is during ice conditions and mainly how well the turbulent surface fluxes are described by the model. Comparisons of the sensible heat flux and the momentum flux as well as mean parameters are included. The measured data used are from the Bothnian Bay measured during the BASIS field experiment in February to March 1998. RCA1 (Rossby Centre regional Atmospheric model) is a regional climate model for Northern Europe based on HIRLAM and forced by ERA-40 data. Two different grid points of the RCA1 44 km grid have been chosen with geographical coordinates as close as possible to the two measuring sites. The first site is a small peninsula south of the town Umeå at the east coast of Sweden and the second one is the ship R/V Aranda anchored in the sea ice outside the Finnish west coast. The model presents generally too large negative (downward) sensible heat fluxes and too large momentum fluxes over ice. The largest difference between modelled and measured sensible heat fluxes are seen after warm front passages due to melting conditions. There are some uncertainties in the comparison of modelled fluxes and measured fluxes at Umeå due to a complex and varying ice cover around this measuring site. The vertical structure in the atmosphere has also been studied and modelled temperature, wind and humidity profiles were compared to radiosondes at the Umeå site. Two periods with on-ice flow and off-ice flow was analysed and one of the main differences was that for the on-ice situation an internal boundary layer was built up over the ice. Modelled profiles are generally smoother then measured profiles and inversions and other small-scale phenomena like low-level jets are almost never described correctly by the model but there are tendencies of the phenomena to occur.Sammanfattning av ”En undersökning i hur bra den regionala klimatmodellen RCA1 beskriver olika parametrar över is, i huvudsak de turbulenta flödena”. I denna undersökning har den regionala klimatmodellen RCA1 jämförts med mätdata för att se hur bra modellen är över is och framförallt hur bra den beskriver de turbulenta flödena över is. RCA1 är en regional klimatmodell för norra Europa baserad på HIRLAM och som drivs av ERA-40 data. Modelldata har jämförts med mätdata från två platser i Bottenviken, en liten halvö utanför Umeå på den svenska östkusten och forskningsfartyget Aranda som var fastankrad i havsisen utanför Finlands västkust. Mätningarna gjordes under BASIS fältexperiment i februari till mars 1998. Modellen ger generellt för stora negativa (nedåtriktade) sensibla värmeflöden över is och likaså för stora impulsflöden över is. Den största skillnaden mellan modellvärden och mätningar förekom efter det att varmfronter passerat och detta beror delvis på smältförhållanden. I jämförelsen av de turbulenta flödena beräknade av RCA och de uppmäta turbulenta flödena från Umeå finns det vissa osäkerheter pga. den komplicerade issituationen runt denna mätplats med mycket varierande isförhållanden. Den vertikala strukturen i atmosfären har också undersökts och temperatur, vind och fuktighetsprofiler har jämförts. Två perioder varav en där det blåste från havet mot isen (on-ice) och en där det blåste från isen mot havet (off-ice) valdes ut och en av skillnaderna var att det bildades ett internt gränsskikt över isen i on-ice perioden. Modellen har en tendens att släta ut profilerna och småskaliga fenomen som inversionsskikt, inversionshöjder och low-level jets är nästan aldrig korrekt beskrivna i modellen men det finns tendenser till inversioner och vindmaximum.
28
Moore, Daniel Thomas. ""There are yet other kinds of work which may be done?" : aesthetic history and the representation of the Italian past, 1850-1935". Thesis, University of Birmingham, 2008. http://etheses.bham.ac.uk//id/eprint/6150/.
Testo completoAbstract (sommario):
This thesis explores a number of interdisciplinary writings on the Italian past by later nineteenth- and early twentieth-century artistically minded critics and cultural commentators, with a view to recovering their historiographical importance. Beginning with an exploration of the parameters and scope of a genre defined as 'aesthetic history', along with some theoretical work grounded in current debates about the nature of historical representation, this thesis goes on to offer in-depth discussion of texts on the Italian past by John Ruskin, Walter Pater, Vernon Lee, Henry James, D. H. Lawrence and Adrian Stokes. By offering a critical reconstruction of each author's thinking about the past, along with the cogent and ill-explored engagements they make with historiographical study, this thesis affords the reader a better understanding of some of the tensions present in historical writing - tensions surrounding issues of epistemology, visuality, psychology and materiality - during what were decades of great change in historical thinking. Moreover, this thesis offers a detailed investigation into the important role played by the Italian past in the aesthetic-historical canon, which in turn produces a more complicated picture of the connections between literature, aesthetics and historiography during this period.
29
Bell, Lenore. "'If you see something, say something' : the figure of the "other" in the 9/11 novel ; and, Translatie : een roman aan de Bijlmerramp". Thesis, University of St Andrews, 2014. http://hdl.handle.net/10023/7041.
Testo completoAbstract (sommario):
One central question unites the critical and creative halves of this project: how should fiction respond to a sudden crisis? Through this thesis, I was able to explore the potential pitfalls authors need to avoid in tackling historic subject matter. This critical half of this thesis examines the treatment of race in fiction depicting the September 11 attacks. The writers mentioned in this thesis—including Jonathan Safran-Foer, John Updike, Jay McInerney, Don DeLillo—are considered to be left-of-centre thinkers. However, their 9/11-related work aims to restore a classical notion of American hegemony. Chapter I: An American Breed discusses the protagonists of these novels, and how they represent ideas of upper class American whiteness. Chapter II: Fighting the Need to be Normal is about the portrayal of terrorists and terrorist bodies. Chapter III: You Want to Dance, I Want to Watch is about the treatment of African American characters. The final chapter, Chapter IV: White Crayons is about lower class and ethnically marked white characters. The creative half of the thesis is Translatie, a novella. It is written from the perspectives of two different characters, Jacob and Mia. Jacob is a 17-year-old Surinamese rent boy who is being sexually abused by his upstairs neighbour. Mia is a sex-show worker in her early 30s. The novel traces their lives in the week leading up to the 1992 Bijlmer Air Disaster. After the disaster, they go missing, and their friends and relatives are left to track them down.
30
Krotseng, Marsha V. "To be or merely to seem? : investigating the image of the modern "education governor"". W&M ScholarWorks, 1987. https://scholarworks.wm.edu/etd/1539618888.
Testo completoAbstract (sommario):
Daniel Boorstin claimed in 1962 that for twentieth-century Americans, "fact or fantasy, the image becomes the thing." The 1980s abound with governors promising education reform in their states, activities underscored by the August 1986 National Governors' Association education report, Time for Results. Thus, the image of the "Education Governor" has become the fashionable "thing." But does fact or fantasy lie beneath the surface of this image? This research probes that question through considering (1) the extent to which specific educational measures proposed in Inaugural and State of the State Addresses of twenty modern-day "Education Governors" correspond with their subsequent actions and (2) the personal attributes, professional ties, and educational involvement which characterize these "Education Governors" of the 1960s through the 1980s.;However, the historical record reveals that the "Education Governor" is not a new phenomenon. During the early 1900s a number of governors gained state and regional as well as national prominence for their outspoken efforts to promote public education. Preeminent among these individuals is Charles Brantley Aycock, still revered as North Carolina's great "Education(al) Governor.".;This "Education Governor" image was projected into modern times through former North Carolina Governor Terry Sanford's invocation of Aycock's legacy. While little consensus exists as to a distinct group of modern "Education Governors," the characteristics of their early twentieth century predecessors suggest that such individuals would espouse educational reform and, consequently, earn nationwide renown. These qualities also should describe governors judged to have been outstanding and who have participated actively in the Education Commission of the States. Twenty governors of the 1960s through 1980s who share such attributes--and, hence became the focus of this study--include Jerry Apodaca; Reubin Askew; Edmund Brown, Sr.; John Chafee; William Clinton; Winfield Dunn; Pierre duPont, IV; Robert Graham; Clifford Hansen; Mark Hatfield; Richard Hughes; James Hunt; Thomas Kean; Tom McCall; Robert McNair; William Milliken; Russell Peterson; Calvin Rampton; Robert Ray; and Terry Sanford.;Ultimately, the rhetoric of these so-called modern "Education Governors" proved congruent with the reality of their actions. All emphasized educational "quality" and "excellence." Nineteen increased direct state expenditures for education at a rate substantially higher than inflation. Thirteen participated in regional or national education organizations, and eight had been involved with education prior to their election.
31
Aspizua, Lucía. "OFFSHORE FOUNDATION - A CHALLENGE IN THE BALTIC SEA". Thesis, Högskolan i Halmstad, Energivetenskap, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-28443.
Testo completoAbstract (sommario):
ABSTRACT This project deals with the search of the most proper offshore foundation to install in the Baltic Sea, in order to reduce costs and environmental impact. A pre-study was performed to define the Baltic Sea conditions and the required knowledge for the following steps. Afterwards, the specifications were set and clarified, and then the concept analysis phase was started. The analysis phase included the description of each one of the current foundations, those which are considered conventional foundations and those which are innovative ones. In order to evaluate these concept foundations, selection methods were used to assess the most relevant features of these foundations which should fulfil the requirements. The concepts ranking was studied and it led to the final results. Two different outcomes were obtained; such as, innovative concepts, which obtained the first position in this report; and conventional concepts, as a second finding. The continuous contact with different experienced professionals of this sector was essential during the whole project, in order to obtain advices, experienced knowledge and feedback.
32
Marles, Mary Ann Susan. "Biochemical and molecular studies of the seed coat of Brassica carinata (A. Braun.) and other Brassicaceae". Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp05/NQ63898.pdf.
Testo completo
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MacPherson, Douglass A. "Optical and radio frequency refractivity fluctuations from high resolution point sensors sea breezes and other observations". Thesis, Monterey, Calif. : Naval Postgraduate School, 2007. http://bosun.nps.edu/uhtbin/hyperion.exe/07Mar%5FMacPherson.pdf.
Testo completoAbstract (sommario):
Thesis (M.S. in Meteorology)--Naval Postgraduate School, March 2007.Thesis Advisor(s): Donald L. Walters, Kenneth L. Davidson. "March 2007." Includes bibliographical references (p. 37-38). Also available in print.
34
Rauch, Lea. "You can only write about Africa as seen with a European eye : You have no other". Thesis, Örebro universitet, Institutionen för humaniora, utbildnings- och samhällsvetenskap, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:oru:diva-58766.
Testo completoAbstract (sommario):
This research looks at the French press coverage of the 2014 uprising in Burkina Faso. The aim is to focus on the nature of the coverage by Libération and Le Figaro. Another goal is to find out how these newspapers framed their reporting and whether there are similarities and differences in their coverage. This research draws upon news framing. It is built on findings about the coverage of demonstrations and how the Western media reports about African news. It aims at refining the existing research on the subject of French media reporting about Africa and at filling the research gap of foreign news coverage of demonstrations in Sub-Saharan Africa. The research uses a qualitative content analysis to study the articles published by Libération and Le Figaro during the first week of the uprising. It examines the terms used to name actors, actions and to define the events. The thesis found that both newspapers covered the events in a rather similar way, pointing out the same actors and focusing on the same actions. They both draw a violent picture of the events. There were nevertheless differences in framing the responsibilities for the violent actions during the uprising.
35
Avenant, Casper S. "Quantifying predation on sea turtle eggs and emerging hatchlings by ghost crabs and other native predators". Thesis, Edith Cowan University, Research Online, Perth, Western Australia, 2023. https://ro.ecu.edu.au/theses/2681.
Testo completoAbstract (sommario):
High predation rates on sea turtle eggs and hatchlings, in combination with other pressures, are likely having a significant impact on sea turtle numbers, which is a particular issue for breeding populations of threatened or endangered sea turtle species. Yet, comprehensive assessments of predation on eggs and hatchlings combined are lacking. This study aimed to quantify the levels of predation on eggs and hatchlings by a range of predators, and the importance of eggs and hatchlings to the diets of ghost crabs, which are known predators of early life phases of turtles and have been observed to be highly abundant on turtle nesting beaches on the north-west coast of Australia. The study focussed particularly on two important nesting sites for the loggerhead turtle Caretta caretta in the Ningaloo Coast World Heritage Area, while predation was also assessed at a nesting beach for the flatback turtle Natator depressus on Thevenard Island. Start- and end-of-season nesting inventories, in-situ accelerometers, and infrared videography were used to assess predation on eggs and emerging hatchlings, while ghost crab burrow counts were used as proxy for crab densities to assess the link between ghost crab densities and levels of predation. In addition, complementary methods were used to determine the diets of ghost crabs: gut content analysis (GCA); DNA analysis of gut contents; stable isotope analysis (SIA) of claw tissue; and controlled feeding experiments to determine food preferences and feeding rates on different potential food sources.
This study demonstrated the high pressure that ghost crabs place on sea turtle eggs and hatchlings at some nesting beaches. Ghost crab densities at Gnaraloo Bay were almost twice those at Bungelup Beach and Thevenard Island, corresponding to egg predation levels ranging from extreme to none (79% vs 39% vs 0%, respectively). Accelerometer data suggested that eggs were most vulnerable to predation in the first days after ovipositing and the final weeks before hatching. No hatchlings were observed emerging from nests at Gnaraloo Bay, where egg predation was estimated at 79%. In comparison, 43% of hatchlings were predated at Bungelup Beach, and 30% of hatchlings were predated on Thevenard Island, mainly by ghost crabs, and to a lesser extent by silver gulls. A range of other predators were observed, including native goannas and terns but also the invasive black rat.
The golden ghost crab Ocypode convexa was far more abundant than any other ghost crab species at all locations. GCA showed that this species is a facultative scavenger with an omnivorous diet comprising high contributions of abundant beach-cast leafy brown algae. However, DNA analysis identified C. caretta in ≥ 20% of crab guts, and stable isotope mixing models showed that sea turtle was the most important source of assimilated C and N during the nesting season. Additionally, aquarium-based feeding assays showed that O. convexa preferred sea turtle and fish carrion over leafy brown algae. Thus, ghost crabs play a major role in the consumption of sea turtle eggs and hatchlings, and therefore the transfer of nutrients and energy derived from sea turtles at rookeries on sandy beaches. An estimated ~90% of the energy derived from turtle nests at Gnaraloo Bay is transferred to higher tropic levels through predation, compared to ~53% at Bungelup Beach and ~14% at Thevenard Island. This study highlights the important roles of both sea turtles and ghost crabs in energy fluxes and nutrient cycling at generally nutrient-poor sandy beach ecosystems.
The sometimes extreme rates of mortality of eggs and/or hatchlings via native predators can possibly put the long-term survival of some sea turtle stocks at risk. These findings provide a basis to urgently establish management strategies to limit predation by native predators at turtle rookeries.
36
Nilsson, Månz. "Radio-wave propagation modelling over rough sea surfaces and inhomogeneous atmosphere". Thesis, Karlstads universitet, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-84595.
Testo completo
37
Monson, Daniel H. "Sea otters (Enhydra lutris) and Steller sea lions (Eumetopias jubatus) in the North Pacific : evaluating mortality patterns and assessing population status at multiple time scales /". Diss., Digital Dissertations Database. Restricted to UC campuses, 2009. http://uclibs.org/PID/11984.
Testo completo
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Bisesi, Joseph H. "Growth and survival of the Pacific white shrimp, Litopenaeus vannamei, in sea salt and other ionic environments". Connect to this title online, 2007. http://etd.lib.clemson.edu/documents/1181668703/.
Testo completo
39
Hanni, Krista Deanne. "Assessment of baseline health, juvenile survival, and a rehabilitation program for southern sea otters (Enhydra lutris nereis) /". For electronic version search Digital dissertations database. Restricted to UC campuses. Access is free to UC campus dissertations, 2003. http://uclibs.org/PID/11984.
Testo completo
40
Mosk, Virginia Jan. "The visual system of seahorses and pipefish : a study of visual pigments and other characteristics". University of Western Australia. School of Animal Biology, 2005. http://theses.library.uwa.edu.au/adt-WU2005.0081.
Testo completoAbstract (sommario):
Syngnathidae (seahorse, pipefish, pipehorses & seadragons) are highly visual feeders with different species feeding on specific types of prey, a behaviour that has been related to snout length. Worldwide, many species have become threatened by habitat destruction, collection for the aquarium trade and exploitation for traditional medicine, as well as recreational and commercial bycatch. Attempts to establish aquaculture programs have been of limited success. Little is known about their visual capabilities in detail. The visual systems of fishes are known to have evolved specific adaptations that can be related to the colour of water in which they live and specific visual tasks such as predator detection and acquisition of food. This study examined the ocular and retinal morphology, photoreceptor structure and spectral sensitivity of adult individuals of a local pipefish (S. argus), local seahorse (Hippocampus subelongatus) which both inhabit green water seagrass beds, and a tropical species of seahorse (Hippocampus barbouri) from blue water coral reefs. Some juveniles were also investigated. Accordingly, we developed an understanding of the features that are common to all syngnathids and those that have evolved for specific environments. Cryosections of the eyes were taken to determine morphological distinctions of this group. Lens characteristics measured using a spectrophotometer determined 50% cut-off wavelengths below 408nm for all 3 species, hence no transmission of UV light to the retina. Histological examination determined a cone dominated fovea in the ventro-temporal retina and very large rods concentrated in the peripheral retina and adjacent to the optic nerve. Microspectrophotometry measured the absorption characteristics of the visual pigments within the photoreceptors showing the presence and maximum sensitivity (λmax) of rods, SWS single cones, and a broad, complex array of LWS double/twin cones. The results are discussed in relation to the light environment inhabited by each species and their feeding requirements. The implications for the design of suitable light environments for aquarium and aquaculture programs for the Syngnathidae are also discussed. Rearing success of this family of fish, for both the aquarium trade and re-stocking programs, would be advised to take lighting regimes and specifics of the animals’ vision into account
41
Farran, Sue. "Vanuatu : lands in a sea of islands". Thesis, Northumbria University, 2013. http://nrl.northumbria.ac.uk/15613/.
Testo completoAbstract (sommario):
This collection of eight single-authored papers published between 2008 and 2012, provides detailed and critical insight into land issues in the Pacific island country of the Republic of Vanuatu. Developed largely from conference papers delivered to international audiences, these publications make a novel and significant contribution to the prior knowledge base in a number of ways. Firstly, the research behind these papers has combined physical proximity to the subject matter – through being based in Vanuatu for several years, with access to a range of legal and other materials as well as personal insights, with a broader intellectual expertise in the law of property and trusts as introduced into the region. A combination of doctrinal and empirical research has made it possible to give a specifically focussed law in context and law in practice perspective, while not losing sight of the inter-relationship of law and society. In this way the existing knowledge base founded on anthropological and ethnological studies has been given a further and contemporary, legal dimension. Secondly, the desire to reach a wider audience than the regional or local, has meant that these publications have engaged Vanuatu as a case-study with broader themes, sometimes starting from the local and exploring outwards and sometimes starting from the global and narrowing in on Vanuatu as a concluding focus. While recognising all that makes Vanuatu unique, the contribution that this collection makes is to bring this island study from the particular to the general, in from the margins or as part of a removed and rather isolated area of study, towards the mainstream. Thirdly, these publications articulate land developments at a crucial moment. The first decade of the twenty-first century, has been a time of increased public awareness of land issues in Vanuatu and in the Pacific region more generally, and a time of increased donor intervention in land and law related activities. That this research and the related research that informs it, is integral to this process has been evidenced by cross referencing to some of the work and other indicators of esteem by aid donors, inter-state agencies and other academics. Land remains a site of contestation in Vanuatu. The critical analysis of present issues, against the historical context of colonial rule and its subsequent influence; the introduction of foreign laws and institutions and the continuing importance of unwritten customary law, exposes many of the challenges that are encountered in trying to frame a way forward and engages with controversies surrounding land policy, land law and the management of this most fundamental resource.
42
Markel, Russell Wayne. "Rockfish recruitment and trophic dynamics on the west coast of Vancouver Island : fishing, ocean climate, and sea otters". Thesis, University of British Columbia, 2011. http://hdl.handle.net/2429/37056.
Testo completoAbstract (sommario):
Fundamental questions in marine ecology concern processes that underlie the replenishment of marine populations and the cascading effects of large marine predators. My dissertation describes three studies in which I investigated the recruitment and trophic dynamics of nearshore Pacific rockfishes in the context of these two themes.
In the first study, my collaborators and I investigated spatial variation in rockfish recruitment success in the context of the effectiveness of Rockfish Conservation Areas (RCAs). We show that although rockfish recruitment is highly variable throughout nearshore seascapes, spatial patterns of recruitment success are generally consistent from year to year. We identify characteristics of locations that contribute to spatially recruitment patterns, including fetch, distance to open coast, tidal velocity, and sea surface temperature. Because most high-value areas with respect to rockfish recruitment fall outside of the RCA considered in this study, we propose that this protected area may be vulnerable to reduced long-term effectiveness.
Next, I investigated how interannual variation in the timing and magnitude of coastal upwelling affects the recruitment success of two groups of nearshore rockfishes. I used otolith microstructure analyses to compare birth and settlement dates, pelagic durations, and growth rates of rockfishes in years of contrasting recruitment success and upwelling dynamics. I found that although growth rates of both rockfish groups responded positively to ocean temperature, the highest recruitment success I observed over a six-year period corresponded to strong and prolonged upwelling that favored onshore transportation of pelagic larvae, but not pre-settlement growth and survival.
In the final study, I examined how the indirect effects of sea otters on kelp forest habitat size and productivity affect rockfish recruitment dynamics and post-settlement trophic dynamics. I tested the effects of sea otters on kelp forest size, and concomitant effects on rockfish recruitment success. I used stable isotopes and otolith microstructure analyses to compare rockfish trophic position and kelp-derived carbon content, and their relative effects on juvenile growth rates, between regions with and without sea otters. I show that kelp forests are larger in the presence of sea otters and associated with higher rockfish recruitment; however, higher kelp productivity does not translate to rockfishes having higher kelp-derived carbon contents. Instead, in the presence of sea otters, adult rockfishes had higher mean trophic levels, indicating that these populations consume higher proportions of relatively high trophic level prey, i.e. fish.
These studies contribute broadly to understanding marine population dynamics, and hold important implications for predicting responses of species and ecosystems to marine protected areas, climate change, and the indirect effects of predator loss and reintroduction.
43
Olsson, Lina. "Sea Denial i en irreguljär asymmetrisk konflikt". Thesis, Försvarshögskolan, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:fhs:diva-6847.
Testo completoAbstract (sommario):
The classic theories about naval warfare is something that still influence warfare and naval theories today. In a world that changes so does the warfare, which shows a more asymmetrical character than before. Power asymmetry between actors is something to take into account today, but the history revealse unexpectadly that the weaker actor often stands as the winner. Is the theories of naval warfare that is influenced by a era of decisive battle still valid? Not only has the power asymmetry changed in time but so has the actors, not seldom the weaker actor is of a irregular character in todays naval warfare.The question here is if a theory influenced by theories created for regular conventional forces can explain the war- fare an asymmetric irregular actor carries? The issue this study address is Geoffrey Till ́s theory about Sea Denial and how that can explain the Sea tiger’s warfare against the Sri Lankan navy in the civil war of Sri Lanka. The result of the study shows that Tills theory can explain an irregular asymmetrical con- flict and also confirms that for a weak actor this could be warfare of success.
44
Yehnjong, Petra Seka. "Paleozoic Seed Bank and Their Ecological Significance". Digital Commons @ East Tennessee State University, 2014. https://dc.etsu.edu/etd/2316.
Testo completoAbstract (sommario):
Soil seed banks are a reservoir of viable seeds present in the soil in plant communities. They have been studied and characterized in various ways in different habitats. However, these studies are limited to modern seed banks. This study extends seed bank studies to the Paleozoic Era. It was hypothesized that size distribution and seed density in Paleozoic seed banks exhibit similar patterns as in modern seed banks. Seed sizes and seed density of fossil seed from Wise Virginia were estimated. Modern seed bank information was obtained from published data. Data were analyzed using one-way ANOVA and Kruskal-Wallis test. The Paleozoic size distribution was predominated by larger seeds and the estimated seed density of 19 200 seeds m-3 falls within the range of modern seed banks but at a higher end of modern seed bank densities. During the Paleozoic they were sufficient to insure regeneration of these economically important forests.
45
Vos, Daniel Jon. "Some of the Other Works of the Torah: Boundaries and Inheritance as Legal Metaphors in the Hebrew Bible and Hellenistic Jewish Literature". Thesis, Boston College, 2020. http://hdl.handle.net/2345/bc-ir:108730.
Testo completoAbstract (sommario):
Thesis advisor: David S. VanderhooftIn this dissertation, I explore the metaphorical value of law in the Hebrew Bible and Hellenistic Jewish literature. While the study of biblical law and Hellenistic Jewish halakah is well established, less attention has been paid to the intentional use of legal diction to create legal metaphors—metaphors that draw upon legal language for the sake of generating new ethical and theological insights. My argument is based upon Roger White’s theory of metaphor which states that a metaphor juxtaposes two otherwise unrelated vocabularies in order to produce new meaning. Thus, I draw upon comparative study of ancient Near Eastern law as a means of understanding the register of biblical Hebrew legal diction concerning land tenure and inheritance. With the legal background established, I investigate three sets of metaphors, one drawn from the prohibition against violating established property boundaries and two drawn from the legal domain of inheritance: the inheritance of wisdom and the inheritance of glory. These legal metaphors demonstrate the profitability of attending to legal diction. The boundary metaphor demonstrates that when attempting to describe the good or virtuous life, law served not only to provide a description of obligations, it also shaped the way in which early Jewish communities understood reality itself. The inheritance of wisdom metaphors demonstrate that sophisticated comparisons could be drawn between legal concepts and scribal learning, particularly when wisdom was thought of as a document. The inheritance of glory metaphors demonstrate the way in which semantic shifting impacts the meaning of a metaphor
Thesis (PhD) — Boston College, 2020
Submitted to: Boston College. Graduate School of Arts and Sciences
Discipline: Theology
46
Schiavone, Vincent J. Schiavone. "The Impacts of Social-Emotional Competence and Other Student, Parent, and School Influences on Kindergarten Achievement". Kent State University / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=kent1541520363873191.
Testo completo
47
Pinyosinwat, Anan. "The effect of seed rate on the yield and quality of wheat and its interaction with other agronomic practices". Thesis, University of Reading, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.367692.
Testo completo
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MAOLONI, ANTONIETTA. "Development of new organic functional preserves, sauces and spices from sea fennel (Crithmum maritimum L.) and other horticultural products". Doctoral thesis, Università Politecnica delle Marche, 2022. https://hdl.handle.net/11566/299879.
Testo completoAbstract (sommario):
Il finocchio marino (Crithmum maritimum L.) è un’erba spontanea alofita facoltativa, caratterizzata dalla presenza di numerosi composti bioattivi, ampiamente diffusa nei paesi del Mediterraneo, il cui consumo è fortemente legato alla tradizione culinaria della regione Marche. Il progetto di questa tesi di dottorato è stato finalizzato alla valorizzazione di finocchio marino biologico coltivato nell’area del Parco del Conero, per la produzione di conserve, salse e spezie dall’elevato valore nutrizionale.
Il finocchio marino fresco è stato sottoposto a uno studio fitochimico per identificare nuovi composti con potenziale attività farmacologica. Successivamente, è stato impiegato, da solo o mescolato con olive verdi, per la produzione di conserve fermentate in salamoia, con l'inoculo di uno starter selezionato. Mentre, le dinamiche microbiche che si verificano nel corso di una fermentazione spontanea sono state studiate nel kimchi. Il finocchio marino è stato valutato come veicolo per la somministrazione di batteri probiotici, inoculando Lactiplantibacillus plantarum IMC 509 e SYNBIO® in una conserva acidificata a base di finocchio marino e valutandone la vitalità durante una conservazione refrigerata. Sono state inoltre prodotte due salse a base di finocchio marino e sono state sottoposte a test di shelf-life accelerata e microbial challenge test, per valutare la stabilità microbiologica delle salse e il rischio microbiologico associato alla potenziale sopravvivenza o crescita di Staphylococcus aureus e Bacillus cereus, dopo l'applicazione di pastorizzazioni convenzionali o blande, rispettivamente. Infine, sono stati valutati quattro differenti metodi di essiccazione per la produzione di spezie essiccate.
I risultati complessivamente ottenuti hanno confermato le grandi potenzialità del finocchio marino per la produzione di conserve, salse e spezie dall’elevato valore nutrizionale legate al territorio, con potenziali ricadute positive sul settore produttivo.Sea fennel (Crithmum maritimum L.) is a facultative halophyte wild herb, characterized by the presence of several bioactive compounds, widely diffused in Mediterranean countries, whose consumption is strongly linked to the culinary tradition of the Marche region. This Ph.D. thesis project was aimed at the exploitation of organic sea fennel cultivated in the Conero Natural Park area, for the production of high nutritional value preserves, sauces and spices. Fresh sea fennel was subjected to a phytochemical study to identify new compounds with potential pharmacological activity. Subsequently, sea fennel sprouts, either alone or mixed with green olives, were exploited for the production of fermented preserves in brine, with the inoculation of a selected starter. Whereas, the microbial dynamics occurring during a spontaneous fermentation were studied in kimchi. Sea fennel was evaluated as a carrier for probiotic bacteria delivery, inoculating Lactiplantibacillus plantarum IMC 509 and SYNBIO® in an acidified sea fennel-based preserve and assessing their viability during a refrigerated storage. Furthermore, two sea fennel-based sauces were produced and have been subjected to accelerated shelf-life and microbial challenge tests to evaluate the microbial stability of the sauces and the microbial risk associated with the potential survival or growth of Staphylococcus aureus and Bacillus cereus, after the application of conventional or mild pasteurizations, respectively. Finally, four different drying methods for the production of dried spices were evaluated. The overall collected results confirmed the great potential of sea fennel for the production of high nutritional value preserves, sauces and spices linked to the territory, with potential impact on the manufacturing sector.
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Sundin, Joe. "Seed rain and dispersal possibilities between process domains : Comparing seed dispersal abundance between lakes, rapids and slow-flowing reaches". Thesis, Umeå universitet, Institutionen för ekologi, miljö och geovetenskap, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-149086.
Testo completoAbstract (sommario):
Process domains are formed by geomorphological process, these geological formation act as water pathways for river systems and affects hydrochory potential for seeds. Hydrochory acts differently depending on fluvial settings and is an important factor for diversity in the riparian zone along streams and lakes. The aim of this study was to (1) determine if process domains influence plant species abundance and diversity, and (2) if certain environmental factors associated with different process domains affects species abundance and diversity. The sample sites are parts of a dendritic water system located in tributaries for Hjuksån summer 2017 in northern Sweden. Seed samples were collected from three process domains (lake, rapids and slow-flowing) and later identified in lab. A greater species abundances and seed amount were found at lakes compared to rapids and slow-flowing reaches but there were no significant different between the process domains. None of the environmental factors showed to be important but there were indications that number of boulders might influence seed dispersal. Shannon Diversity index showed to be highest along slow-flowing reaches, but again no significant difference. Understanding process domains and their unique compositions in species abundance and diversity is for example an important factor for restoration techniques of anthropogenic modified streams.
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Head, Martin James. "Dinoflagellate cysts and other marine palynomorphs from Lower Eocene through Lower Pliocene sediments of the Labrador Sea and Baffin Bay". Thesis, University of Aberdeen, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.368502.
Testo completoAbstract (sommario):
Cenozoic sediments recovered during Leg 105 of the Ocean Drilling Program in Baffin Bay (Site 645) and the Labrador Sea (Sites 646 and 647) have yielded a persistent record of dinoflagellates and other marine palynomorphs. Hole 647A in the Labrador Sea contains an almost complete deep-water record of early Eocene through early late Oligocene sedimentation. Dinoflagellate assemblages indicate outer neritic to oceanic conditions throughout, but with possible increased influence from shelf environments during the early Eocene. Lower Eocene dinoflagellate assemblages are similar to coeval assemblages from the Rockall Plateau, but those from the middle through upper Eocene have mixed affinities, and are perhaps related to intensification of the proto-Gulf Stream. Oligocene dinoflagellate assemblages suggest the influence of both Arctic and North Atlantic watermasses at this site. A diverse marine palynoflora was recovered from upper Miocene and lowermost Pliocene sediments of Hole 646B in the central Labrador Sea. Palynomorph assemblages are thought to be largely allochthonous and may reflect changing bottom-water paleocurrents. The dinoflagellate flora consists of both oceanic and neritic species and indicates temperate surface-water conditions. Lower through lower upper Miocene dinoflagellates recovered from Baffin Bay (Hole 645E) indicate a cool-water, neritic environment. Assemblages have North Atlantic and Norwegian Sea affinities, but also contain notable protoperidiniacean elements. Dinoflagellate biostratigraphy estimates initiation of ice rafting in Baffin Bay at between 7.4 and 9.5 Ma. Increased terrigenous influx and apparent disappearance of certain dinoflagellate taxa occur in the middle to late Miocene and may be related to oceanographic changes or climatic deterioration. The erection of three new dinoflagellate genera, 19 new dinoflagellate species, and three new acritarch species, are among the many taxonomic proposals contained in this study of the Miocene. Several Miocene holotypes from Japan, have also been studied and compared to the Leg 105 material.